. Eastern forest insects . F-506746 Figure 41.—Leaf of basswood mined by the basswood leaf miner, Baliosus ruber. to greenish-blue above, bluish-black beneath, and about 6 mm. long. Full-grown larvae are dark brown to almost black above, dark yellow beneath, and a little longer than the adult. In Maine, over-wintering adults emerge in early spring and feed for a short time by eating small holes in the leaves before laying their eggs on the lower surface of the leaves. The larvae feed on both leaf surfaces and become mature in about 5 weeks (7'9U). In the North there is one generation per year;
. Eastern forest insects . F-506746 Figure 41.—Leaf of basswood mined by the basswood leaf miner, Baliosus ruber. to greenish-blue above, bluish-black beneath, and about 6 mm. long. Full-grown larvae are dark brown to almost black above, dark yellow beneath, and a little longer than the adult. In Maine, over-wintering adults emerge in early spring and feed for a short time by eating small holes in the leaves before laying their eggs on the lower surface of the leaves. The larvae feed on both leaf surfaces and become mature in about 5 weeks (7'9U). In the North there is one generation per year; in the South there may be two. The related species, A. carinata Germ, feeds on elm and A. sub- plicata (LeC), on willow. The pine colaspis, Colaspis pint Barber, occurs from Maryland to central Florida and westward to east Texas. It feeds mostly on southern pines but also occasionally on cypress and ornamental spruce. The adult is an elongate-oval, convex, rusty yellow or brown beetle with green reflections, and it is about mm. long. Full-grown larvae are sparsely covered with short hairs. Small clusters of longer hairs occur at the lower, outer edges of each body segment. The winter is spent in the larval stage in cells in the soil. Pupa- tion occurs in the spring and adults begin to emerge by early May. They feed on the needles of the host, chewing from the edges into the midrib. In light infestations, feeding is generally limited to the needles on new growth; whereas in heavy infestations needles over the entire crown may be attacked and entirely consumed. Where this occurs, infested stands appear as if scorched by fire. The larvae feed on the roots of grasses and herbaceous vegetation until fall, and then move deeper in the soil where they spend the winter. Infestations tend to occur on pines growing along the edges of stands bordering on grassland, or on isolated groups of pines growing in fields or yards. Severe infestations have been recorded in pine plantations i
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
